Keywords: Patient Operated Selector Mechanism.jpg Early 1960s picture of user operating a electric communication device in the form of a sip-and-puff typewriter controller named the Patient Operated Selector Mechanism POSM or POSSUM which was developed in the United Kingdom Released into the public domain by Possum company The orginal Possum company still existing thought no long making speech aids Early 1960s http //www possum co uk/ Possum Ltd PermissionOTRS 2011080310010501 http //www possum co uk/ Possum Ltd Original upload log en wikipedia Quadell CommonsHelper page en wikipedia Patient_Operated_Selector_Mechanism jpg 2011-08-03 13 59 Failedwizard 308×405× 78736 bytes <nowiki>Early 1960s picture of user operating a electric communication device in the form of a sip-and-puff typewriter controller named the Patient Operated Selector Mechanism POSM or POSSUM which was developed in the United Kingdom Released into the public d</nowiki> Augmentative and alternative communication People in wheelchairs Occupational therapy Speech synthesis Speech generating devices |